Use proper background color in NavigatorSection

[poulch]

What type of PR is this?

• [ ] 💅 Refactor
• [ ] 🌟 Feature
• [ ] 🔥 Bug Fix
• [ ] 🔩 Maintenance
• [ ] 🛠 Workflow CI/CD changes

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Usage Instructions, Screenshots, Recordings

Have you written tests?

• [ ] Yes!
• [ ] No... here is why: Writing tests are mandatory, please replace this text with why test are not included in this PR

[Optional] Description

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 4def14a8e4ff41611ae80a7372f46d8b7303c4a1

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | ---------------- | ----- | | saleor-dashboard | Patch |

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